Text addition to manage.rst
Text addition to manage.rst

- added sysadm default config settings and the process to create custom configs to manage.rst

c3d2/sysadm,c3d2/sysadm,c3d2/sysadm,c3d2/sysadm,pcbsd/sysadm,pcbsd/sysadm,pcbsd/sysadm,pcbsd/sysadm,pcbsd/sysadm